Identification help requested

Sometime ago, I had received scanned photos of the Plenzler and Przybylski families through a cousin, John Plenzler.

A photo on the CD that he graciously sent had no identification. If anyone can identify the photo below, leave a note here and I will respond as soon as I can. I have a hunch that this could possibly be a photo of the Andrew and Francis Przybylski family, taken shortly after their arrival in the US (early 1880s). My hunch is based on that there are five children in this photo, and the first four children of the family were born in Poznan, Poland. The fifth child, Victoria, was born in Toledo, Ohio in 1882. Other than the infant, there appears to be two boys who could possibly be sons Frank and John and two girls who could possibly be daughters Marianna and Rose. However, I have no way to verify. Click the photo to download a full sized scan.